Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"modified aging evolution algorithm" » "modified aging solution algorithm", "modified aging evolutionary algorithm", "modified aging convolution algorithms", "modified caging evolution algorithm"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified aging evolution algorithm") or ("modified multiobjective optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified aging evolution algorithm") OR ("modified multiobjective optimization algorithms")).
• Removing quotes may allow a broader search: (( modified aging evolution algorithm ) or ( modified multiobjective optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified aging evolution algorithm") or ("modified multiobjective optimization algorithms"))*.